he metering of natural gas is a continuous and non-repeatable measurement that may lead to expensive loss in case of imprecision. So, how to conduct the process control, which is necessary? How do we detect the incorrect metering result, as all governments and enterprises are concerned? What methods should be employed to bring errors to a common point? How do we improve metering capabilities and minimize the risks resulted in metering errors?

Guoguang uses laptop as the upper computer of the metrological supervision system, which receives data through a RS-485 port. We also developed software for the metrological supervision system.